+ 1 that it's a matter of opinion. I certainly wouldn't shy away from another deck-stepped mast (I have had both).
I was dismasted in the deck-stepped mast, which had nothing to do with the way the mast was engineered. In that case, it probably wouldn't have mattered which method of "attachment" I had.
Having said that, though, if a rig failure is something less than catastrophic, you're probably better off with the keel-stepped mast.